Application Date and Fitness

Just a quick one. I am set on becoming a YO in the 2017 batch and was pretty set on applying at the end of March/start of April. Is this too early on to be applying, or is the timescale pretty lengthy for getting each part of the process out of the way? I'm grafting very hard on my fitness at the moment to be 100% mentally and physically before I grab this by the balls, but if for whatever reason they don't feel I'm officer material, I'm not set on what to do. For me it's the lifestyle and pushing myself as far as I can go, and I would love to shoulder the responsibility of leading 30 blokes at a young age having tackled the hardest training about, but it would knock me for 6 not passing POC/AIB for whatever reason. What is your advice?